Gramophone



Patented O ct. 18, 1927.

ERNEST LOUIS RANKIN, oF Lommer,iENGLMm3,.nsseanortonionnmtnr`Ero.,ormnmrs:Y

.GnAMoPHonn Application. vled February 25.,y 19215,y Serial gNo. 11,565,andy informat gritan Manch l;

Thisinvention relates to improvements in the `Winding mechanism tmotorsfor use' in gramophones and agovernor or speed "controlling: meansktherefor.

fAccodfing to thisl invention a circular plate. is arranged underneathand vconcentric with the record carrying` table and may" be adapted torotate or remain stationary. Pads ,of 'telt or the like .are arranged'on arms Apivotlly supported by the Vunderside of therecord table, thepivot-ed armshav'ing suitably arranged Weights attachedr thereto, vvhich`Weights, upon rotation of the record table', are caused by centrifugalaction to swing outwardly' thus causing the' arms" to rock and the padsto Contact with' the'plate, thereby obtaining a.' braking action betweenthe Circular plate and record car'ryingtab'le acting as avgovernor orspeed control device.

"In vthe accompanying drawings AWhich illustrate' tivo forms 'oi' theinvention,

Figure 1y isa plan view ofa machine embodying' the invention, a` portionot the' rec; ord table, governing plate and casing beln'g broken away;Vf

Figure 2 is a sectionalvieW on the'line 2 2 of Figure 1.

Figure 3` is a plan view'loi` amodied form ot' the invention. f

Figure is a section on'the'line 4-4'of Figure-3.

In "the machineV shown. in Figures ljand' 2 the recordv carrying-table 1has arranged'A beneath it and vconcentric` therewith a circular plate .2adapted toact 'as' a governor= plate. Upon the Aunderside' of therecord'v table L near the periphery j thereof larejpivotally mountedseveral Weighted arms 3 carrying leaves' 4 upon which areunountedpads"offelt or the. like. Upon rotation of the`record table" thei Weightedarms'are 'caused' by centrifugal action to swing outwardly,l thus causing thepads carried 'by-the leaves4' to contactnvith the upper face of thei`governor plate 2' (asshown in chain linesFigure2), thereby obtaining.abraking action. Thus this "device acts 4as agovernor, Whilst theWeightof therecord tableinthe first instance 'preventsthe spring motorof the gramophone" from 'racing'. l'The distance between the recordtable 1k and'governor plate 2 can beadjusted `as 'desired in a manner tobehereinatter described inforder to retard or accelerate the brakingaction of 'the leaves' 4.

drives" therecord' vtable '1,"the is]ee'vef"being slidable within limitslongitudinallyupon thespindlecasing 6v. Surrounding tlieisleeve 5''isfasleeve 8"Wh'ich is` slottjed to rallovv'e an aurirliary sleeve 9,Whjich"is monnted onthe pivoted at 12 and 'actuated by" spring 13 whichtends* to' retain the 'sleeves y'tndi) a lowered position. Afrodconnects theother end ot' the lever 111 with one eltd'otianther lever14' which is "pivoted 'ati 15 ,.onf'the'tn# derside ot'ltlietop'f themachine1 casing' control screw 16 extendingthrough saidl top andengaging the other end ot Ithe leverf'tg When 'the screxvl` isI turnedto'raise'th'e armot vthelever 14' which is connectedto the governorscrew the motionisv transmittedhto the armll 'Whichjrais'es' thesleevesandl) andconsequently moves the' plateL 2i nearer tothe record tablel.

WVinding ofL the lmotor 17 `may beiefetfted by the' rotation ofradial'arms f 18, rotatable conc-entrically with: the. plate 2'5and recordtablefl-'andfxedlymonntedlupona 'plate'f1r9 attached `to or integralWith the jls'leeve8L The motor 'may be v'fully fvvo'und 'by' ajfew r0-ta'tions of these ar1ns'\vhich 'are/arranged above the top ot thegramophonecasing'land; owingi y'to their position; are not "cumbersome,although -5 they are always attached to jthe' machine. A toothed Winding\vheelf"'-20*fix edl'y 'mounted on" the fsleeve 8'fmeshes :with anotherltoothed Wheel 21 integral'fwithf-the casing offthe'spring'motor 17.

Alra-tchet Wheel 22 concentric lvWithagrd fixed upon a toothed Wheel 23is engagedV-by pawls 24 'carried bythe '-undersideoflthe spring Amotorcasi-ng. The toothed/'Whelfl meshes Witha` toot-hed Wheel 25keye'dftrpon astub" shaft 26y which also carriesa toothed Wheel 27 which'is -in :mesh -=With f another toothed vvvheel 28 keyed -rrpon'the'spindle 7.

"Thus upon ytheI rota-tion 'of the radiali-"arms the spring is Wound up,the pavvls 24, by their engagement with the ratchet Wheel/.$22,preventing:V rotation off the record" ta-bleffduring this operation.

In 'thisf form of' Winding; the-motorlwhen unwinding causes rotation ofthe sleeves 5 and 8 around the `spindle casing in the opposite directionto the rotation of the recordtable. Consequently Y the radial windingarms 18 which are attached to the sleeve 8, and the plate 2 which ismounted on the sleeve 5, are rotated in the same direction as thesleeves.

In the modified construction shown in Figures 3 and 4 two sleeves() and37 are mounted `on the spindle casing 6, `the sleeve 30 beingnon-rotatable relatively to the `spindle casing.

A peripheral groove 31pm a non-rotatable sleeve 32 carrying the plate 2receives pins carried in the forked end of a leverpiv oted at 34 on `theupper side of the top of the machine casing and actuated by a `governorscrew 35 against the action of a spring 36 whichis arranged between theotherarm of said lever and the top of the machine casing. Actuation `ofthe lever 33 causes the sleeve 32130 slide upon the sleeve I 30, and theplate 2 carried uponthe'said sleeve 32 can thus be moved towards or fromthe record table 1. The sleeve 37, onwhich the toothed wheel 88 iskeyed, extends to a base plate 39 and is rotatable relatively to thespindle casing. A ratchet wheel 40 mounted concentrically on the sleeve37 and a pawl al mounted upon the base `plate 39 allow rotation of thetoothedV wheel 38 and sleeve 37 only during windingV up of the motor,which is effected by the aid of a bevel drive, one bevel wheel 42 ofwhich is integral with the rotatable sleeve around the spindle casing.The other bevel gages a` wheel 25 keyed to a stub shaft 26 carryinganother toothed wheel `2T which meshes with a wheel 28 mounted `upon thespindle 7. i t

In order to facilitate easy running of `the mechanismv the toothedwheels may bemounted upon ball or roller bearings whilst a similararrangement may be` provided between the spindle and spindle casing.

Apin projects inwardly of the sleeve 32 60 and is adapted to engageaslot or keyway inthe sleeve 3() attached to thespindle casmg.

Owing to the arrangement of gearing b`etween the motor and the recordtable `or central-spindle, it is necessary to have only e short windmotor which therefore requires less winding and less effort and allowsgreater steadiness of the entire machine during rewinding.

I claimp `y' I t 1. A gramophone" comprising a frame, a plate carried bythe frame, a tubular casing mounted on said plate, a spindle supportedin said casing, means for rotating the spindle, a record carryingtablemounted upon the spindle, a sleeve slidably mounted upon saidtubular casing, a governor plate mounted upon said sleeve and arrangedbeneath the record carrying table, arms pivotally mounted upon therecord table, and leaves carried by said arms andl movable into contactwith the governor plate to retard the speed of the record carryingtable. p

2. l"gramophone comprising a frame, a plate carriedby the frame, atubular casin mounted on said plate, `a spindle supported in ,saidcasing, means'for rotating the spin-l dle, a record carrying tablemounted upon the spindle, a sleeve `slidably mounted upon said tubularcasing, a governor plate mounted upon said sleeve and arranged beneaththe record carrying table, ,arms pivotally mounted upon the recordcarrying table, leaves carried by said arms and movable into contactwith the governor plate by centrifugal action upon the arms, and meansvfor adjusting the distance between the said governor plate vand therecord carrying table. f

A gramophone comprising a. frame, a plate carried by said frame, atubular easing mounted on said plate and having in-` terior and`exterior bearing surfaces, a spindle supported in said "casing, meansfor rotating the spindle, a record carrying table mounted upon thespindle, a peripherally grooved sleeve slidable upon the casing, agovernor plate carried upon the sleeve and arrangpd beneath the recordcarrying table,

a pivotally mounted armhaving one end extending into the groove of theslidable sleeve, arinspivotally mounted on the record carrying table,and leaves carried by said arms and movable into contact with thegovernor plate. i

t 4. In` a gramophone, a tubular casing having interior and exteriorbearing surfaces, a spindle supported in said casing, a record carryingtable mounted on said spindle, means for rotating the spindle', a sleevearranged around the casing and movable. lfmgitudinally thereon, meansfor adjusting the position of said sleeve, agov ernor plate on `saidsleeve, arms pivotally mounted upon the record table, and leavesassociated `with said arms, the said leaves moving into contact with thegovernor plate to retard the speed ofthe record carrying table.V y i, l

5. A gramophone comprising a tubular casing having interior and exteriorbearing lob surfaces, a spindle supported in said casing, a recordcarrying table mounted on said spindle, means for rotating the spindle,a sleeve arranged around the casing and movable longitudinally thereon,a governor plate mounted on said sleeve and arranged heneath the recordcarrying table, means for normally retaining the governor plate at itsmaximum distance from the record carryf ing table, means for moving thesleeve to adjust the distance between the said governor plate and therecord carrying table, arms pivotally mounted upon the record table` andleaves associated with said arms,

said arms `oeing caused by centrifugal action to move said leaves intolcontact With the governor plate toretard the speed of the tard thespeed of the record carrying table.

7. A gramophone comprising a tubular casing having interior and exteriorbearingV surfaces, a spindle supported in said casing, a record carryingtable mounted on said spindle, means for rotating the spindle, a sleevearranged, around the casing, means for rotating the sleeve, means foradjusting' the position of said sleeve on the tubular casing, a governorplate on said sleeve, 'arms pivotally mounted upon the record carryingtable, and leaves associated With said arms,

the leaves moving into contact with they governor plate to retard thespeed of the record carrying table.

8. .A gramophone comprising a tubular casing having interior andexterior bearing surfaces, :l spindle supportedin said casing, a recordcarrying table mounted on said spindle, means for rotating the spindle,a peripherally grooved sleeve arranged around the casing` means forrotating the sleeve, a pivotally mounted arm for moving said sleevehaving one end extending into the groove of the slidable sleeve, meansfor moving the arm to an desired position, a governor' pla-.te on saidsleeve, arms pivotally mounted upon the record carrying table and leavesassociated With said arms, the leaves moving into contact With thegovernor plate to retard the speed of thel record carrying table.

9. lA` gramophone comprising a. tubular casing .having interior andexterior bearing` surfaces, a spindle supported in said casing, a recordcarrying table mounted on said spindle, meansl for rotating the spindle,a peripherally grooved sleeve arranged around the casing, a governorplate on said sleeve,

means for rotating the sleeve, a pivotally mounted arm for moving saidsleeve having one kend extending into the groove of the slidablesleeve,means for moving the arm to any desired position, means fornormally moving the governor plate to its maximum position from therecord carrying table, arms pivotally mounted upon the record carryingtable, and leaves associated With said arms, the leavesinoving intocontact With the governor plate to retard the speed of the recordcarrying table.

ERNEST LOUIS RANKIN.

